32 results about "Yaw system" patented technology

This utility model relates to the field of wind power yaw technology and discloses a waste oil collection device for the maintenance of a wind turbine yaw system. The device includes a yaw main wheel and a track component. The track component includes a calibration plate with a fixing groove at the top. A fixing component is inserted into the inner wall of the fixing groove, and a snap-fit ​​component is fixed to the bottom of the inner wall of the fixing groove. A snap-fit ​​groove is formed at the bottom of the fixing component, and the inner wall of the snap-fit ​​groove is snap-fitted to the surface of the snap-fit ​​component. A sloping shovel is fixed to the side of the fixing component away from the calibration plate, and a backhoe is fixed to the side of the sloping shovel closer to the bottom of the calibration plate. This utility model secures the fixing component to the fixing groove of the calibration plate, ensuring that the bottom of the sloping shovel and the backhoe are tightly fitted to the top of the calibration plate. Thus, during the forward rotation of the yaw main wheel, the sludge on the inner wall of the yaw main wheel is scooped up by the sloping shovel, and the backhoe similarly scoops up the sludge during the reverse rotation. Workers only need to clean the sloping shovel and backhoe periodically.

This invention relates to the field of wind power generation technology, specifically to a hydraulic control structure, a wind turbine yaw system, a control method, and a wind turbine generator set. The hydraulic control structure is suitable for connection to a yaw brake hydraulic circuit. The hydraulic control structure is configured such that: when the average wind speed within a preset time is greater than a preset wind speed, the output pressure of the hydraulic control structure is maintained at a preset pressure; and / or, when the average wind speed within a preset time is less than a preset wind speed and the power of the wind turbine generator set is less than a preset power, the output pressure of the hydraulic control structure changes proportionally between zero and the preset pressure. This invention can adjust the output pressure of the hydraulic control structure according to the wind speed, ensuring yaw stability, reducing wear on the yaw brake, and extending its service life.

This invention discloses an aerodynamic test bench adapted to horizontal / vertical axis wind turbines, including a base and a connecting column. The connecting column is located on top of the base, and a test platform is provided above the connecting column. The test platform includes a horizontal bar, and one end of the horizontal bar is provided with... T The horizontal bar has a vertical bar at the other end. T A square platform is mounted on top of the support frame; a dynamic torque sensor is mounted on the square platform, with one end connected to a magnetic powder brake and the other end connected to a wind turbine fixing rod. This invention also discloses an aerodynamic testing method adapted to horizontal / vertical axis wind turbines, including: wind turbine type adaptation installation, basic aerodynamic performance testing (no yaw), yaw condition aerodynamic performance testing, and variable load condition aerodynamic performance testing. T The bracket enables rapid switching between horizontal and vertical axis wind turbines. The combination of a precise yaw system and stepless load adjustment can simulate various complex working conditions such as constant wind speed with varying load and constant load with varying yaw angle.

This invention discloses a gear ring fixing structure for a combined drive yaw system of a wind turbine generator. The yaw system employs two yaw gear rings: an outer yaw gear ring and an inner yaw gear ring. The meshing surface of the outer yaw gear ring is the external tooth surface, and the meshing surface of the inner yaw gear ring is the internal tooth surface. Each of the two yaw gear rings is individually meshed and driven by an independent yaw motor. The gear ring fixing structure includes a gear ring fixing flange and friction gaskets. The inner yaw gear ring has a flange hole and is connected to the gear ring fixing flange by bolts. The outer yaw gear ring does not have a flange hole, and a friction gasket is placed between its bottom surface and the top surface of the gear ring fixing flange. The horizontal and vertical displacement of the outer yaw gear ring is restricted by the aforementioned bolts. The gear ring fixing flange is connected and fixed to the tower flange of the wind turbine generator by bolts. This invention effectively connects and fixes the two yaw gear rings without affecting installation and commissioning.

The present application relates to the field of wind power generator, specifically relates to a kind of wind power generator with wind direction monitoring adaptive function, including stand, the stand top is provided with fan shell, the fan shell one side is provided with wind wheel, and generator set is installed in the fan shell inside, the fan shell both sides are symmetrically connected with the guiding wing of rotation.The present application realizes real-time wind direction monitoring by wind vane and touch control switch, can start yaw adjustment momentarily, completely get rid of the dependence on non-real-time data of remote weather station, eliminate the communication and calculation delay of traditional yaw system;While electric push rod synchronous drive locking mechanism unlocking and guiding wing swing, utilize the aerodynamic thrust to drive fan steering, ensure that wind wheel is always best windward, improve wind energy capture efficiency.In addition, electric control magnet and magnetic block cooperation can adjust magnetic force, normal working condition filters turbulent flow and prevents false triggering, when extremely strong wind, strong magnetic locking prevents equipment out of control, effectively protect unit and improve operating stability.

This disclosure provides a hydraulic yaw system and a wind turbine generator set. The hydraulic yaw system includes: a hydraulic motor having a first inlet / outlet and a second inlet / outlet; a digital servo valve, with a first port and a second port connected to the second inlet / outlet and the first inlet / outlet, respectively; a mechanical feedback mechanism, with its input end connected to the output shaft of the hydraulic motor and its output end coupled to the valve core of the digital servo valve; a hydraulic drive module connected to a third port of the digital servo valve and supplying hydraulic oil to the hydraulic motor via the digital servo valve; and a hydraulic oil collection module connected to a fourth port of the digital servo valve. The hydraulic yaw system of this disclosure enables passive yaw in the event of a power outage.

The invention provides a method and a device for fault diagnosis of a yaw system in a wind turbine, and relates to the technical field of wind turbines. The method comprises the following steps: acquiring monitoring data collected in a yaw system, inputting the monitoring data into a yaw fault diagnosis model, and outputting a fault diagnosis result, wherein the fault diagnosis model is obtained by training known fault diagnosis results and corresponding monitoring data, and the fault diagnosis result comprises at least one of the following: the position of a yaw sensor is shifted, the yaw sensor is damaged, the yaw contactor is stuck, the hardware of a yaw motor / reducer is damaged, and the yaw motor is braked, In the working process, the monitoring data collected by the yaw system can be input into the yaw fault diagnosis model in real time, and the yaw fault diagnosis model can be used to determine whether the yaw system has a fault and the specific fault diagnosis results when the fault occurs. In this way, the operation and maintenance personnel can be prevented from going to the aircraft seat for inspection, and the fault diagnosis efficiency of the yaw system can be improved.

The utility model relates to the technical field of wind power generation, in particular to a super-capacitor-based auxiliary power supply device for a yaw system of a wind turbine generator. The device comprises a main circuit; the main circuit comprises a wind turbine generator main power supply, a charging module, a super capacitor module, a yaw motor driving module and a yaw motor which are connected in sequence; the charging module is used for converting alternating current supplied by a main power supply of the wind turbine generator into direct current; the super capacitor module is used for storing direct current and providing electric energy for the yaw motor driving module; and the yaw motor driving module is used for converting the electric energy into a driving signal required by a yaw motor. According to the utility model, auxiliary power supply is provided for the yaw motor through the super capacitor module, the problem of insufficient power supply of the yaw system of the wind turbine generator set under the instantaneous high-power requirement is effectively solved, and the response speed and the stability of the yaw system are improved.

This invention relates to a control method, equipment, and medium for the yaw system of large wind turbines based on wind forecasting. It belongs to the field of wind power generation technology and addresses the problems of low wind-following capability and short lifespan of existing yaw systems. The method includes: processing time-series data of wind speed and direction to extract high-frequency and low-frequency components; establishing a prediction model for the low-frequency components of wind speed and direction; calculating the yaw system adjustment angle using the prediction model; setting the adjustment period; and generating an actual adjustment system based on the yaw system adjustment angle and adjustment period to achieve control of the wind turbine yaw system. This invention is applicable to solving the wind-following problem of wind turbines in the field of wind power generation.

This disclosure provides a method and system for collaborative compensation of yaw error in a pitch control system. It acquires the blade's bending moment matrix, azimuth angle, and macroscopic yaw error, and uses asymmetric load decoupling and quantization techniques to convert the blade load into fixed d-axis tilting moment and q-axis yaw moment components. Subsequently, these moment components are subjected to dual-channel PI control to generate d-axis and q-axis pitch compensation commands, and the yaw feedforward signal is cleverly extracted from the q-axis integral term. Finally, based on the azimuth angle, the d-axis and q-axis pitch compensation commands are fused with the collective pitch command to obtain independent pitch commands for each blade. These commands are then combined with the yaw feedforward signal and macroscopic yaw error for collaborative control and execution, thereby achieving deep collaboration between the pitch control and yaw systems. This approach more accurately reflects the rotor's stress state and enables refined compensation, effectively reducing fatigue loads on the blades and tower base.

The embodiment of the present disclosure relates to the wind power control technical field, and provides a wind turbine yaw limit position protection method and device, electronic equipment, medium, the method comprises the following steps: in response to the yaw speed of the wind turbine reaching the rated speed; according to the pulse statistical value of the yaw counter corresponding to the starting time and the stopping time of this yaw, the corresponding nacelle yaw speed actual value is calculated;According to the working parameters of the yaw system, the nacelle yaw speed reference value is calculated;The nacelle yaw speed actual value and the nacelle yaw speed reference value are compared, and the yaw limit position is protected according to the comparison result.The embodiment of the present disclosure can protect the yaw limit position without changing the hardware device, and ensure the cable safety and operation safety of the wind turbine.

This disclosure provides a hydraulic yaw system and a wind turbine generator set. The hydraulic yaw system of the wind turbine generator set includes: at least one hydraulic motor for driving the nacelle of the wind turbine generator set to yaw; a first hydraulic circuit connected to a first port of each of the at least one hydraulic motor; a second hydraulic circuit connected to a second port of each of the at least one hydraulic motor; and a power-off yaw module connected between the first and second hydraulic circuits, which replenishes the hydraulic oil in the second hydraulic circuit to the first hydraulic circuit when the wind turbine generator set is completely powered off, so as to circulate the hydraulic oil supply to the at least one hydraulic motor.

The application discloses a kind of diagnosis method, device, equipment, unit and medium of fan yaw system, belong to wind power generation technical field.This application embodiment comprehensively considers the yaw data of fan yaw system and the associated data associated with fan yaw system from multiple dimensions, can more accurately identify the fault of fan yaw system.Moreover, for the data of different dimensions, the yaw state of yaw system and the feathering state of blade and other features can be further determined, the fine processing of yaw data and associated data is realized, so that the fault of fan yaw system can be diagnosed according to different working conditions, so that the fault component can be accurately located, without further investigation of operation and maintenance personnel, improve the efficiency of fault diagnosis.

1. Name of the product in this design: Asynchronous motor (for wind power yaw system). 2. Purpose of this design: For use in the yaw system equipment of offshore wind turbines. 3. The key design feature of this product is its shape. 4. The image or photograph that best illustrates the design's key points: a 3D model.

The application discloses a fan yaw gear cleaning device and relates to the technical field of fan yaw gear cleaning. The cleaning unit comprises a mounting ring, a monitoring assembly, a connecting assembly and a cleaning assembly. The elastic coupling transmission and the self-adaptive fitting structure of the cleaning unit significantly improve the cleaning efficiency and reliability of the yaw gear. The scraper moves synchronously when the yaw system is running. The rack of the scraper and the sliding plate are elastically reset by the spring, ensuring that the scraper always fits the gear slot. Even in the case of tooth surface inclination or oil accumulation, the scraper can maintain clean contact and avoid insufficient scraping force or local overload. In addition, the arc-shaped flow guide design of the arc plate matches the gear slot of the gear disc, forming a closed waste collection cavity, effectively preventing waste diffusion during cleaning and improving collection efficiency.

The application discloses a wind turbine static yaw error analysis method and system, and relates to the technical field of wind turbine performance optimization. The method first collects historical operation data of the wind turbine and a wind speed probability distribution function, maps the three to a three-dimensional space to construct a correlation model; generates an active power characteristic surface through surface fitting, locates the yaw error that maximizes the active power in the full wind speed interval, and forms a yaw error-wind speed curve; and finally, the final yaw error is obtained by weighted calculation combined with the wind speed probability distribution function. The method breaks through the limitations of traditional two-dimensional analysis, realizes deep mining and utilization of multi-source data, significantly improves the accuracy, reliability and engineering adaptability of yaw error analysis, can effectively guide the optimization and adjustment of the yaw system, helps to improve the power generation level of the unit, and has important engineering application value and popularization prospect.

The application discloses a wind turbine aerodynamic imbalance monitoring and control method based on sound wave frequency identification, and relates to the technical field of wind turbines. The wind turbine aerodynamic imbalance monitoring and control method based on sound wave frequency identification does not need to stop operation and does not need to add complex sensors, but utilizes the physical characteristics of the sound wave of blade trailing vortex shedding and the pitch angle, solves the technical problems that the traditional method is difficult to quantitatively identify the pitch angle deviation, has a lagging response, is high in cost and is prone to interference. The technology can eliminate the aerodynamic imbalance caused by the pitch angle deviation in real time during the normal operation of the wind turbine, significantly reduces the fatigue damage of the yaw system, the main transmission system and the tower structure, and effectively improves the operation safety, reliability and power generation efficiency of the wind turbine.

This invention provides a hydraulic yaw system and a wind turbine generator set. The hydraulic yaw system includes a hydraulic tank, a hydraulic drive unit, a drive oil circuit module, a replenishment drive unit, and a replenishment oil circuit module. The hydraulic drive unit drives the nacelle to rotate. The drive oil circuit module connects the hydraulic tank and the hydraulic drive unit, selectively supplying hydraulic oil from the tank to the hydraulic drive unit. The replenishment drive unit is selectively connected to the hydraulic drive unit. The replenishment oil circuit module connects the replenishment drive unit, the hydraulic drive unit, and the hydraulic tank. When the wind turbine generator set has a power supply, the hydraulic drive unit and the replenishment drive unit are disconnected, forming a hydraulic oil circuit passing through the drive oil circuit module and the hydraulic drive unit. When the wind turbine generator set has no power supply, the hydraulic drive unit and the replenishment drive unit are rotatably connected, forming a hydraulic oil circuit passing through the replenishment oil circuit module and the replenishment drive unit, achieving passive yaw of the nacelle without power.

This invention discloses a noise reduction device for wind turbines, comprising: a rotating noise reduction cover plate; a plurality of folding noise reduction cover plates, the folding noise reduction cover plates being mounted on the rotating noise reduction cover plate and located at a target position on the tower, the target position corresponding to the end position of the wind turbine blades when they move to be parallel with the tower; a rotating mechanism for driving the rotating noise reduction cover plates to rotate circumferentially along the tower; a folding mechanism for retracting or unfolding the folding noise reduction cover plates; and a control mechanism for driving the rotating mechanism and the folding mechanism, the control mechanism being mounted on the tower. The device provided by this invention allows the entire device to yaw with the blades under the control of the yaw system, thereby further improving noise reduction efficiency; in extreme weather conditions, the folding mechanism can fold and retract the folding noise reduction cover plates, extending their service life; it requires no modification to the shape and structure of the tower itself, is easy to assemble and disassemble, has low cost, and provides good results.

This invention provides a yaw locking device for a wind turbine generator set, comprising at least one yaw locking pin. The yaw locking pin includes an upper positioning plate, a flange, and a lower pin arranged sequentially from top to bottom. When the nacelle needs to be locked after the wind turbine has been commissioned, the yaw locking pin is first inserted into the corresponding yaw drive interface on the main frame, so that the flange is precisely embedded in the yaw drive interface. The flange is then fastened to the main frame with bolts. Simultaneously, the limiting portion on the lower pin can engage with the yaw gear ring of the wind turbine generator set to restrict the rotation of the yaw gear ring, thereby ensuring that the yaw locking pin can effectively bear the wind turbine load and reliably physically lock the yaw system. This invention also provides a wind turbine generator set.

The application discloses a yaw motor flexible brake control method and system of a wind turbine generator set, and relates to the technical field of wind turbine generator sets. The method comprises the following steps: acquiring wind data of the surrounding environment of the wind turbine generator set within a preset time period; acquiring the running state of a yaw system in the wind turbine generator set and the yaw system speed; judging whether the wind data is abnormal; if the wind data is abnormal, generating a brake braking scheme of a brake braking system in combination with the running state and the yaw system speed, wherein the brake braking scheme comprises an emergency braking scheme; and if the brake braking scheme is the emergency braking scheme, operating the brake braking system according to a flexible input scheme to reduce the collision impact between the brake braking system and the yaw system. The application can flexibly input the brake braking system when the surrounding environment wind is abnormal, so as to reduce the collision impact between the brake braking system and the yaw system in the process of reducing the yaw system speed.

This invention relates to a method for controlling the yaw of a wind turbine system by controlling multiple yaw drive actuators. When the yaw drive actuators apply the same torque to all motors, if the motors are not engaged when the yaw system is activated, this can cause some motors to overspeed. Therefore, if the actual motor speed reference of a yaw drive actuator is higher than a specific motor speed reference, an output signal is applied to the yaw drive actuator whose actual motor speed reference is higher than the specific motor speed reference to reduce the actual motor speed reference.

The present application provides a hoisting method of a multi-impeller wind turbine generator set, the hoisting method comprising: hoisting and installing a tower by hoisting equipment; hoisting and installing a first connecting structure by the hoisting equipment, so as to install the first connecting structure on the tower; making the first connecting structure yaw a first predetermined angle in a first direction away from the hoisting equipment through a yaw system; hoisting and installing a second connecting structure by the hoisting equipment, so as to install the second connecting structure on the tower. The hoisting equipment can be located at a first position within a rotation radius of the first connecting structure and the second connecting structure, and the first predetermined angle ranges from 90° to 120°, the rotation radius being a maximum outer diameter formed when the first connecting structure and the second connecting structure rotate around the center axis. According to the hoisting method of the present application, the movement of the hoisting equipment is reduced, the hoisting time is shortened, the hoisting efficiency is improved, and the hoisting cost is reduced.

This application discloses an omnidirectional adaptive wind power generation system and its control method for island environments, relating to the field of wind power generation technology. It solves the problems of existing wind power generation devices, such as yaw systems being susceptible to salt spray corrosion, traditional tail rudders exhibiting lag in response, and high maintenance costs. The system includes a support rod, a generator set and a main shaft mounted on the support rod, a cylinder fixed to the main shaft, an arm that can rotate freely in the circumferential direction of the cylinder, a wind vane and a configuration rod fixed to the arm, and a limiting component for limiting the wind vane. Through the purely mechanical synergy of the counterweight rod and the limiting component, the wind vane can automatically maintain or switch to the optimal windward attitude under wind pressure, driving the cylinder to rotate unidirectionally. This, in turn, generates electricity through the generator set driven by the main shaft. It eliminates the need for complex yaw systems and electronic control devices, resulting in a simple structure, high reliability, and low cost. Suitable for island wind farm environments with variable wind directions, it effectively solves problems such as low-wind-speed start-up and omnidirectional adaptation.

The utility model discloses a hydraulic torque wrench support frock for wind turbine yaw system assembly, including upper part positioning support, lower part L shape base and two wrench limit stop, the upper part positioning support is U shape structure, the opening of U shape structure sets up to the yaw platform of yaw system, through U shape structure and is stuck in the edge of the support plate of yaw platform, the top edge of lower part L shape base is connected with the bottom of upper part positioning support, the front side of lower part L shape base supports on the yaw rear machine seat of yaw platform, and the left and right two ends of rear corner place of lower part L shape base are provided with two wrench limit stop, for the reaction arm of hydraulic torque wrench that supports in the corner place of lower part L shape base is limited, and the interval between two wrench limit stop is matched with the width of the reaction arm of hydraulic torque wrench. The utility model has the advantages of simple structure, convenient operation, improve production efficiency, high security, stable and reliable performance etc.

This application discloses a yaw control method, device, electronic device, and storage medium, relating to the field of yaw control technology. The yaw control method includes: acquiring the composite wind speed and composite wind direction at the wheel hub; calculating the yaw error of the yaw system based on the composite wind direction and the nacelle position; performing fuzzification and defuzzification operations on the composite wind speed and yaw error sequentially to obtain weighting coefficients; obtaining the predicted wind direction based on the composite wind direction; constructing a multi-step prediction model based on a preset target yaw prediction sequence; using the predicted wind direction as input to the multi-step prediction model to output the yaw prediction error; constructing a multi-objective optimization function based on the weighting coefficients and the target yaw prediction sequence; calculating the predicted yaw action based on the multi-objective optimization function and the yaw prediction error; and executing the predicted yaw action through a yaw actuator. This application predicts yaw actions based on the dynamic changes in wind speed and wind direction, reducing wind energy loss.

This invention belongs to the field of intelligent control technology for wind turbine generators, specifically involving an adaptive yaw control method, device, and medium based on fuzzy logic. The method collects and preprocesses generator operating data, calculating absolute wind direction, wind direction deviation, and turbulence intensity. A virtual yaw system is constructed, using wind direction deviation, wind speed, and turbulence intensity as inputs and yaw control commands as outputs, establishing an initial fuzzy rule base and membership functions. A genetic algorithm is used to encode and iteratively optimize the fuzzy rule combinations and membership function parameters, aiming to maximize wind energy utilization while satisfying yaw number constraints, thus obtaining optimal control parameters. Finally, the optimal parameters are transferred to the actual wind turbine controller to achieve real-time adaptive yaw control. This invention can accurately generate yaw control commands based on real-time wind conditions and generator status, improving wind energy utilization while satisfying yaw number constraints, achieving wind turbine yaw control, and enhancing power generation efficiency.

This invention relates to the field of wind power generation technology, specifically to an in-workshop testing system for the yaw system of a wind turbine generator set. After assembling the yaw system and yaw bearing, the system controls the start / stop, speed, and direction of the yaw motors via a yaw test cabinet, enabling testing of multiple yaw motors within the yaw system and improving its reliability. The invention also relates to an in-workshop testing method for the yaw system of a wind turbine generator set. This method controls the start / stop, speed, and direction of the yaw motors via a yaw test cabinet, acquires the current signals of each yaw motor, obtains the stress conditions of each yaw motor based on these current signals, and then adjusts the tooth clearance between the gears of the yaw gearbox and the gears of the generator set bearings based on these stress conditions. This results in a more even distribution of load across the multiple yaw motors in the yaw system, further improving the reliability of the yaw system.

The present disclosure relates to a method (100, 200) for operating a wind turbine (10). The wind turbine (10) comprises a rotor (18) comprising a plurality of blades (22). A rotor disc (181) is defined by an area swept by the blades (22). The wind turbine (10) comprises a nacelle (16), a tower (15) and a yaw system (56). The method (100, 200) comprises detecting or predicting a fire in a first blade (22f) and adjusting an azimuth angle of the rotor (18) such that the first blade (22f) is positioned in an upper half of the rotor disc (181). Furthermore, the method (100, 200) comprises yawing the nacelle (16) away from a wind direction (28) to an angle of more than 90 degrees and less than 270 degrees. The present disclosure also relates to a control unit (96) configured to implement such a method (100, 200) and to a wind turbine (10) comprising such a control unit (96).

A method for operating a wind turbine is provided, wherein the wind turbine includes a rotor and plurality of blades configured for rotating about a rotor axis such that a rotor disk is defined by a circular area swept by the blades. The wind turbine includes a nacelle, a tower, and a yaw system configured to yaw the nacelle and the rotor about a longitudinal axis of the tower. The method detects or predicts a fire in a first one of the blades and adjusts an azimuth angle of the rotor about the rotor axis such that the first blade is positioned in an upper half of the rotor disk. The nacelle and rotor are yawed away from an incoming wind direction to a yaw angle of more than 90 degrees and less than 270 degrees.